Link-making press



Nov. 3, 1925.

N. R. OLSON LINK MAKING PRESS Filed Sept. 20. 192A 3 Sheets-Sheet 1 Nov. 3, 1925.

N.R.QL$QN LINK XVLXKING' FRESS Filed Sept.

BY @aA/l'd 6.

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- ATTORNEK.

Nov. 3, 1925. 1,560,188

, N. R. OLSON LINK mmme PREss Filed Sept; 20. 1924 3 Sheets-Sheet a 22 mu 7?. Omn mmvrox BY 5 m 8 z A TTORNEY.

Patented Nov. 3, l9

NELS R. OLSON, OF BELLINGHAM, WASHINGTON.

LINK--MAKING- PRESS.

Application filed September 20, 1924. Serial No. 738,771.

To all uwZzom it may concern.-

Be it known that I, New HQ OLSON, a citizen of the United States, and a resident of Bellingham, in the county of \Vhatcom and State of l i ashington, have invented a new and useful Link-hilaking Press, of which the following is a specification.

lily invention relates to in'iprovements in link-making presses, especially the kind which form sa-rwdust, and the lil e, con\"e ."or links, and the object of my improvement to provide a simple, direct-acti11g press which will shape hot iron bars into the do sired form and a..so punch the rivet holes therein while stil in the press. I attain this object with the mechanism illustrated in the accompanying three sheets of drawings, which form part of this specification, and in which Figure l is a plan view of my press, Fig. 52 is side elevation of Fig. 1, Fig. 3 is a front end eleration of Fig. 1, Fig. l is an end elevation of one of the two similar forming blocks drawn on a larger scale, Fig. 5 is side elevation of Fig. 4:, Fig. l) is a longitudinal view of one of the punch screws with a punch in place therein drawn on a larger scale, Fig. 7 is a plan view of a conveyor link formed in my'press, drawn on a larger scale, Fig. 8 is aside elevation of F' 7, Fig. 2) is a plan view of one of the pair of press shoes, Fig. 1.0 is a rear elevation of Fig. 9, Fig. .11 is an end elevation of Fig. 9, Fig. 12 is a plan view of the steam valve used to control the operation of the steam piston drawn on a larger scale, Fig. 13 is a front side elevation of Fig. 12. Fig. 1a is a rear side ele 'ation of Fig. 12, Fig. 15 is a plan view of said valve with its cap removed. Fig. 16 is a front side elevation of Fig. 15 with the valve housing in section on a vertical medial plane, Fig. l? is a rear side elevation of Fig. 15 with said valve housing in. section on a medial vertical. plane, Fig. l8 a side elevation of the shape block, drawn on a largerscale plan view of Fig. 18.

Similar characters refer to similar parts throughout. Certain parts are broken a ay to show other parts hidden thereby.

More particularly: The top surface of table top 20 is in four lGVQlS'WhlCl], beginning at the front and higherend, are desigand Fig. 19 is a on top of surface a) and is a rigid part of the table top. Said shape block isot rectangular form excepting the rear ends of the sides each of which are-cut away at a 14 A vertical hole Z) is made in. each corner of block 22 entirely through the same. .i horizoi'ltal hole 0 is made in the vertical middle of each side of said bloclt to intersect holes 7). Holes 0 are shearing holes for punches while holes If allow the discs punched into holes a to fall therefrom. To transverse crosshead 2-3 is bolted slides a, e each of which is movable horizontally in one of slideway slots 2d longiti'ulinally in table top 20. Crosshead 23 has a notch b centrally in the forward edge thereof. Two rollers 25 are mounted on vertici 1 pins for revolution on crosshead 23. Two forming fingers 26 are mounted for horizontal oscillation on pins e in crosshead 23 equidistant from the longitudinal center thereof and project forward therefrom. Each of lingers 26 has a boss 5 on the inner side thereof at its rear end. Fingers 26 are located to lie one on either side of block 22 at a distance therefroi'n equal to the thickness of the iron bars from which the links are formed. Steam cylinder 27 is fastened centrally to the table top on level (Z and extends longitudinally thereof. Its piston rod 28 is fastened to a piston a therein, and also centrally to the rear side of crosshead 23.

The reciprocation of said piston in said cylinder causes crosshead 23 to move forth and back from its foremost position at 225 to its most rearward position at 23. Steam valve 29 used to control the operation of said piston a in cylinder 27. Steam enters said valve through pipe 30 and pa through valve cylinder (4 in hole 36 to enter vertical groove 0. in the rear wall of said cylinder. \Vhen valve handle 36, see Fig. l, is in its illustrated middle position no steam can pass said, valve. But when said handle is moved to L steam enters horizontal groove a inthe front wall of cylinder c4",'passes through hole 36 and enters pipe 38fron1 the groove e5 Pipe 83 conducts steam into cylinder 27 in front of its piston which it forces to the rear thereof moving crosshead 23 rearward. Meanwhile the air or. steam in said. cylinder to. the rear of its piston leaves through pipe 32 and enters hole 34 in the valve cylinder whence it passes into horizontal slot a in the front wall of 0.3

and enters exhaust pipe 31. Then by turn-- ing handle 36' to position R steam pipe is connected to pipe 32 and steam enters said cylinder behind said piston and forces it forward moving crosshead 23 forward also toward its position at 23. Meanwhile steam from in front of said piston leaves the cylinder through pipe 33 and enters hole in cylinder a whence it passes into horizontal groove a and enters exhaust pipe 31. Thus with valve 29 crosshead 23 can be moved forth and back longitudinally of table 20 and stopped wherever desired. Two right and left press shoes 27 are each pivoted on one of pins 38 in table plane (Z for horizontal oscillation on said pivots 38. These shoes are located to lie a link-bars thickness from the sides of shape block 22 when their press surfaces are parallel with said blocks sides, except that opposite recessions a are corresponding recessions e in each of said shoes. These will. be againreferred to. The upper surfaces of shoes 37 are slightly higher than the corresponding surface of shape block 22 and said shoe surfaces continue to the rear ends of the shoes at a where they are cut away down to the level of table plane (4 for reasons hereinafter explained. At the rear end of each of shoes 37 is handle 39 the outer edge of which has three intersecting planes at, 5 and 0 Plane surface a is, by construction, parallel with guide slots 24 when shoe 37 is in its illustrated full-line posi tion, surface I) is, by preference, inclined at an angle of about when said shoe in said position, while surface 0 is parallel with said guide slots when said handle is in its dotted-line position at 39. Each of rollers 25 is located on crosshead- 23 to bear upon both surfaces a and 6 of one of said handles when the same is in its full-line position. When passing from its full-line position to its dotted-line position at 23 crosshead 23 carries said rollers 25 in contact with surfaces a without moving shoe 37. As soon as rollers 25 pass the intersections of plane surfaces Z7 and while crosshead 23 is moving toward its position 23 said rollers cease to move said shoes on their pivots. But while said rollers 25 are moving rearward over surfaces Z2 handles 39 are carried to their dotted-line positions at 39 and shoes 37 are brought nearest to shape block 22. In the outer side of each of shoes 37 is a rectangular recess 5 inthe end walls of which are slidewa'ys 0 andd f", see Fig. 1-0. In said slideways-in' eachof said shoes is mounted punch crosslie'ad 40, retained in said slideways by caps 41. Pin a in said crosshea-d 4O pivot-ally connects link 42 thereto. The outer end of link is connected to pair o'flinks by pivot belt a. v Saidpair of links 43 is "pivotally mounted ontable '20by pin Stop screw 44; is engaged in a boss on said table to bear on lower link- 43 and limit its forward swing. Each of said lower links is provided with a similar stop screw 44. The rear end of each of tension spiral springs 45 is fastened to the lower of each of pairs of links43 and the forward end thereof is fastened on top of boss 46 on said table top. Said springs 45 react to retain links 43 and 42 in their illustrated full-line positions. The rear ends of bars 47, 47 are connected to crosshead 23 by pivot bolts (0, a". The front end of each of said bars has longitudinal slot 5 therein which is engaged with pivot bolt a. Slot 5' terminates at a point at its forward end which will cause bars 47 to draw links 42 and 43 rearward to dotted positions 42 and 43 respectively when crosshead 23 has reached its position at 23. This movement rearward of links 42 and is caused only while rollers 25 are moving over surfaces 0 on handles 39, and it causes punch crossheads 40 to move toward each other in shoes 37 till said crossheads are proximate to the bottoms of recesses I). In each of cross'heads 40 are engaged two screws 48. These screws each have a threaded body next the head of larger diameter, which is engaged with tapped holes in said crossheads, and a smooth body I) of smalle diameter, see Fig. 6. Body I) is adapted to reciprocate in one of holes in one of shoes 37, see Fig. 10. In the end of body 5 is engaged punch 49, see Fig. 6, adapted to reciprocate in one of holes it", see Fig. 10, and also in one of holes 0 see Fig. 18. Body 6 enters deep enough in shoe 37 to cause punch to enter shape block 22 as far as holes 5 when links 42, 43 are in their dotted line position. Two form blocks 50 are each reciprocable in a vertical hole through the table adjacent each corner recess in shape block 22.- Blocks 50 can each rise even with the top of shape block 22 in which position holes (0 therethrough are in line with holes 0 rearward in block 22. Blocks 50 each have a longitudinal channel 11 in their facing sides. Each of said blocks also has a hole 0 near its lower end. In holes 0 are engaged the ends of vrod 51 which rigidly fastens said blocks to gether. Bar 52 is fastened to slide blocks 0: beneath table 20 to be parallel with crosshead To bar 52 is fastened the rear end of runner 53 which has longitudinal cam slot therein. The ends of cani slot 54 are horizontal and straight but on different levels and are joined by incline a. Runner 53 isfurther supported I by guide bracket 55 which is fastened to the bottonrof table 20 and through which bar is reciprocable. Before. fastening to blocks 50 rod 51 is mounted incam slot 54; This slot isso placed that when rod 51 is in therear end thereof blocks 50 are flush withthe table plane (1 when said rod: is iii-the ill) forward end of said slot said blocks are flush with the top of block 22. When runner 53 moves rearward from its illustrated full-lineposition to its dotted-line position at 53 inclined slot causes rod 51 to rise to the upper part of the cam slot which retains said rod and blocks 50 in their upper position with the tops of said blocks flush with the top surface of block lVhen said runner moves from position 53 to rod 51 and blocks 50 are forced to their lower positions with the tops of said blocks flush with table plane a just before the end of said movement. Also said blocks 50 remain in their lower position during the movement of said runner from position to position 52- forward. Stud 57, see Fig. .1, projects vertically upward from table plane a to therear of the middle of shape block and the top thereof is normally flush with the top of'said' block while the space between said block and stud is the thickness of the bars to be formed into links. The lower end of stud is central in rod 56 which reciprocablc in a vertical hole through the table top. Rod 56 protrudes beneath said table top and its lower end fastened to plate 59. The upper end. of rod 56 flush with table plane a. when the top of stud 5'? is flush with the top of block 22. Studs 58 are reciprocable in vertical holes through the table top midway of the sides of block and adjacent thereto. Norlnall v the top end of studs are. flush with table plane a" Studs 58 are central in the upper ends of rods a beneath the table. The lower ends of rods a are fastened to plate 59. Plate 59 bears on the inner end of pedal which is fulcrumed on pin 61 in a floor bracket. And when said plate is in its lower 1 osition, shown in full lines at 59. it also bears on top of said pedal lever over said bracket which stops its further downward movement. hen at this position the upper end of stud 57 is flush with the top of block and the upper ends of Is 58 are flush-with table plane a. Pressure downward on the outer end of pedal 60 plate to rise to its upper position and. carries the upper end of rod 56 and the upper ends of studs 58 to be flush with the top of block 22.

In operation: Assuming the movable parts of the machine in the illustrated fullline positions. A heated bar of mild steel of suitable dime sious is placed in the machine edge up he een the rear end of shape block 22 and stud 57 with its middle at said stud. This bar is not shown in place in the illustrations because of the closeness of the lines required to show parts of the machine. Valve handle 36 is turned to L and crosshead 23 and fingers 26 are driven forward to dotted-line positions at 23.

' Said fingers .26 force a fold in the hot bar on both sides of block 22 between said block and the surfaces a, a of shoes 37 and .continue to move forward till they and the newly-formed folds in the hot bar completely fill the triangular space on each side of block 22 between shoes 37, 37. Also bosses 6 on said fingers force said hot bar to conform to the shape of the shape block at recesses a, a therein. During this forward movement of crosshead 23 rollers 25 have maintained hearing on surfaces a, a of arms 39 thus preventing shoes 37, 37 from swinging outward. The folded position of said hot bar is shown in. dotted lines in Fig. 1. The said forward movement of crosshead 23 also carried bars 47, 47 forward to their dotted positions at 47, d7. But slots 5, If" in said bars extend far enough rearward to prevent the said forward movement of said bars from exerting pressure on knuckle joints 42, 43-42, 43. During the forward movement of crosshead 23 runner 53 also was carried forward to position 53, see Fig. 2; but, since rod 51 remained. in the lower level of slot 54: of said runner form blocks 50, 50 were retained in their lower position with their upper ends flush with the table top, as shown in Figs. 2 and 18. Steam valve handle 36 is now swung to R and crosshead 23 is moved rearward. Directly after crosshead 23 passes its position at 23 the inclined portion a of runner slot 54 forces form blocks 50, 5O upward, and when rod 51 enters that part of said runner slot on the upper level said blocks 50 have reached a point where their upper ends are flush with the top of shape block 22, and here they remain till said crosshead again approaches its position at 23 from the rear. Said crosshead proceeds rearward till rollers 25, 25. while traversing inclines b 72 have swung arms 39, 39 toward each other and caused shoes 37, 37 to swing toward each other on pivots 38, 38, gradually closing the folds in said hot bar between said shoes and the shape block until said folded over ends lie flatly on each other and are strongly pressed together by the time rollers 25 reach surfaces (1 when said arms cease to swing. By this time the front end of slots Z)" have reached pins (0, a and knucklesdit, 43-- d2, 43 have reached their dotted-line positions at 1-2, d3el2, 1-3 which forced crossheads d0, to their nearest approach and pressed punches 4:9, 49, d9, 49 through the bifolded sides of the newly shaped link 62. While the punches in the forward ends of shoes 37 37 pass through two thicknesses of the link bar which lie close together the punches in the rear ends of said shoes must first passthrough the offset endsof the bar lying against form blocks and'then, after passing through said form blocks, must go further and pass through the "inner folds and enter shape block 22. While passing through holes in blocks the punchedout discs have an opportunity to leave the ends of the punches and drop downward through channels I) in said form blocks. Now the new link is completely shaped and the required rivet holes have been made therein. Handle 36 of steam valve 29 is now turned to L and crosshead 23 and all attachments thereto are returned to their full-line positions which leaves the new link lying in place about shape block 22. In order to raise the link to aposition where it is accessible for grasping with tongs, down ward pressure is applied to pedal by the operator standing near valve 29 and rod 56 and studs 58, 58 are raised to positions 56 and 58, 58 respectively. This upward movement of this rod and studs carries the new link above the level of shape block 22 where it is readily accessible. Now the 1nachineis ready for another hot bar on which the work can be done in the order above recited.

Having thus disclosed my invention, what I claim as new and desire to secure by Letters Patent is,

1. In a machine of the character described in combination, a shape block, a pair of press shoes one pivoted, for oscillation on each side of said shape block, a pair of reciprocable press fingers one adapted to enter each triangular space producible between each of said oscillatable press shoes and the sides of said shape block, and a reciprocable prime mover adapted to separately reciprocate said press fingers and oscillate said. press shoes whereby a link bar set against one end of said shape block is looped by said press fingers in said triangular spaces and then folded against said shape block sides by said press shoes.

2. In a machine of the character described in combination, a shape block having die holes in the two sides thereof, a pair of press shoes one pivoted on each side of said shape block for oscillation, punches mounted in said press shoes for reciprocation adapted to enter said die holes in said shape block when said press shoes are adjacent thereto, a pair of reciprocable press fingers one adapted to enter each triangular space producible between each of said press shoes and said shape block sides, and a reciprocable prime mover adapted to separately recipro- :ate said press fingers, oscillate said press shoes and reciprocate said punches whereby a link bar set against one end of said shape block is looped by said press fingers in said triangular spaces, folded against said shape block sides by said press shoes and perforated by said punches.

3. In a machine of the character described in combination, a shape block having die holes in the sides thereof, a pair of oscillatable press shoes pivoted one on each side of said shape block, punches mounted for reciprocation in said press shoes adapted to enter said die holes when adjacent said shape block, and further adapted to pass through die holes in form blocks, a pair of reciprocable press fingers one adapted to enter each triangular space producible between each of said press shoes and said shape block sides, a pair of form blocks having die holes therethrough registrable with said die holes in said shape block when in operative position and said blocks mounted for reciprocation in holes a link-bar thickness "from said shape block sides, and areciprocable prime mover adapted to separately reciprocate said press fingers, reciprocate said form blocks, oscillate said press shoes, and reciprocate said punches.

4:. In a machine of the character described in combination, a shape block having die holes in the two sides thereof, a pair of press shoes one pivoted for oscillation on eachside of said shape block, punches mounted for reciprocation in said press shoes adapted to enter said die holes in said shape block and further adapted to pass through die holes in form blocks when in operative position, a pair of reciprocable press fingers one adapted to enter each triangular space producible between said press shoes and said shape block, a pair of form blocks mounted for reciprocation in holes a link-bar thickness from said shape block sides having die holes therethrough registrable with said shape block die holes when in operative position. a reciprocable prime moveradapted to separately reciprocate said press fingers, reciprocate said form blocks, oscillate said press shoes and reciprocate said punches, a plurality oi studs mounted for reciprocation in holes adjacent the said sides and one end of said shape block, and a pedal adapted to reciprocate said studs by foot power.

NELS R. OLSON. 

